NASA’s SR-1 Freedom Advances with Progress on Nuclear Power Module

Oct 20, 2026

Predestined for Mars and beyond, NASA’s Space Reactor-1(SR-1 )Freedom will be mankind’s very first fission-powered spacecraft to take a trip outdoors Earth’s orbit. Declared throughout NASA’s “Ignition” occasion, this objective will show nuclear electrical propulsion in deep area, and development is underway on its crucial element: the nuclear power module. To speed up advancement of the spacecraft, NASA and its partners have actually equally accepted crucial agreement actions that will advance the SR‑1 Freedom objective.

“These agreement actions not just lower technical threat and assist us preserve momentum towards our 2028 launch, however they likewise reinforce partnership throughout our partners,” stated Steve Sinacore, SR-1 Freedom program director. “These actions keep SR‑1 Freedom on track and guarantee we’re developing the greatest possible structure for NASA’s very first fission‑powered trip beyond Earth orbit while establishing innovation extensible to a dynamic area nuclear future.”

Sierra Lobo Inc. will supply the nuclear power module’s closed Brayton cycle power conversion system, which transforms thermal energy from its fission reactor into electrical power required for SR-1 Freedom’s nuclear electrical propulsion presentation. The work will be carried out under the Space Flight Systems Development and Operations Contract III, granted in 2024, to support spaceflight hardware style, advancement, screening, and operations at NASA’s Glenn Research Center in Cleveland.

The power conversion system will be incorporated with the fission reactor, which is being developed and established by the Department of Energy (DOE)’s Idaho National Laboratory to finish the nuclear power module. NASA and DOE include comprehensive security requirements throughout the style and advancement of the SR-1 Freedom spacecraft, consisting of interagency security evaluations, constant oversight by a NASA chief security officer, regulative compliance, and a strenuous security style procedure concentrating on risks, failure tolerance, and nuclear security. In addition, the atomic power plant part of SR-1 Freedom will stay non-active till the spacecraft leaves Earth orbit.

Introducing in late 2028, SR‑1 Freedom will provide the SkyFall science objective, a group of 3 Mars helicopters developed from the Ingenuity style, to gather clinical information, show expedition zones, and determine possible water sources. The objective will lead the way for deep area expedition and next‑generation fission-powered systems created to keep NASA’s Moon Base running through durations of darkness and in places where solar energy alone is not adequate.

For details about SR-1 Freedom, check out:

Space Reactor-1 Freedom